#pragma once
#include "BieuThuc.h"
class BieuThucDon : public BieuThuc
{
public:
	double HeSo;
	double SoMu;
	double GiaTriBien;
	BieuThucDon();
	BieuThucDon(int Heso, int Somu,int);
	BieuThuc TinhDaoHam();
	double TinhGiaTri();
	
};

